Since a few days I get this error in VS Code when trying to run a downloaded flutterflow app,
I appreciate any help, thanks!
Launching lib/main.dart on Chrome in debug mode...lib/flutter_flow/flutter_flow_util.dart:389:35: Error: The method 'withValues' isn't defined for the class 'Color'.
- 'Color' is from 'dart:ui'.
Try correcting the name to the name of an existing method, or defining a method named 'withValues'.
Color applyAlpha(double val) => withValues(alpha: val);
^^^^^^^^^^
Failed to compile application.
Exited (1).
This might be, because also before running downloaded flutterflow code I need to downgrade lately:
Note: collection is pinned to version 1.18.0 by flutter_test from the flutter SDK.
See https://dart.dev/go/sdk-version-pinning for details.
2
Because every version of flutter_test from sdk depends on collection 1.18.0 and testApp depends on collection 1.19.0, flutter_test from sdk is forbidden.
So, because testApp depends on flutter_test from sdk, version solving failed.
2
You can try the following suggestion to make the pubspec resolve:
* Consider downgrading your constraint on collection: flutter pub add collection:^1.18.0
Exited (1).